APA (7th ed.) Citation

Bone, I. (2003). A dangerous secret. Puffin Books.

Chicago Style (17th ed.) Citation

Bone, Ian. A Dangerous Secret. England: Puffin Books, 2003.

MLA (9th ed.) Citation

Bone, Ian. A Dangerous Secret. Puffin Books, 2003.

Warning: These citations may not always be 100% accurate.